give some ideal characteristics of opamp. what is CMRR. what is the practical significance of CMRR. why the input impedance must be large. what is impedance matching, why it has to be done. what is MPTT and its advantages. explain about D-A and A-D convertors and significance of opamp in them.

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Answering questions related to ideal characteristics of opamp, CMRR, input impedance, impedance matching, MPTT, and significance of opamp in D-A and A-D convertors.

Ideal characteristics of opamp include high gain, high input impedance, low output impedance, and low noise.
CMRR stands for Common Mode Rejection Ratio and it measures the ability of an opamp to reject common mode signals.
The practical significance of CMRR is that it helps in reducing noise and interference in the output signal.
Input impedance must be large to avoid loading effects and to ensure that the input signal is not attenuated.
Impedance matching is the process of matching the impedance of the source and load to maximize power transfer.
MPTT stands for Maximum Power Transfer Theorem and it states that maximum power is transferred from a source to a load when the impedance of the load is equal to the complex conjugate of the source impedance.
Opamps are used in D-A and A-D convertors to amplify and filter the input signal.
In D-A convertors, opamps are used to convert a digital signal into an analog signal.
In A-D convertors, opamps are used to amplify and filter the analog signal before it is converted into a digital signal.
The significance of opamp in D-A and A-D convertors is that it helps in improving the accuracy and resolution of the output signal.

give some ideal characteristics of opamp. what is CMRR. what is the practical significance of CMRR. why the input impedance must be large. what is impedance matching, why it has to be done. what is MPTT and its advantages. explain about D-A and A-D convertors and significance of opamp in them.

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